Solution : https://service.sap.com/sap/support/notes/44226 (SAP Service marketplace login required)
Key words : 
------------client-specific customizing data-> note 43138client-independent customizing data-> note 44429 setting, additional key words, document management system, frontend -> note 44431, local settings/adjustments, customizing, -> note 37557, independent, prerequisites system, edit file 1
Related Notes : 
       
| 44431 | Setting up a frontend for WWI | 
| 43138 |